[fbt-commit] SF.net SVN: fbt:[93] trunk/bin/synplify_wrapper.py

[<dav...@us...>]

Revision: 93
          http://fbt.svn.sourceforge.net/fbt/?rev=93&view=rev
Author:   dave_infj
Date:     2010-04-14 14:59:39 +0000 (Wed, 14 Apr 2010)

Log Message:
-----------
now implements the equivalent of tail -f on log file, so progress of synth can 
be watched.

Add an exception to handle (naively) synplify subprocess ident lines

Unknown log lines now result in a warning, rather than an error.

Modified Paths:
--------------
    trunk/bin/synplify_wrapper.py

Modified: trunk/bin/synplify_wrapper.py
===================================================================
--- trunk/bin/synplify_wrapper.py	2010-04-13 16:53:18 UTC (rev 92)
+++ trunk/bin/synplify_wrapper.py	2010-04-14 14:59:39 UTC (rev 93)
@@ -34,6 +34,8 @@
 
 import sys
 import os
+import subprocess
+import time
 import errno
 import re
 import getopt
@@ -92,6 +94,19 @@
     return (type, code, file, lno, msg)
 
 
+def tail_f(file, run_condition):
+    interval = 0.5
+
+    while run_condition():
+        where = file.tell()
+        line = file.readline()
+        if not line:
+            time.sleep(interval)
+            file.seek(where)
+        else:
+            yield line
+
+            
 def exec_synplify( project, verbose, exe ):
     # various filenames
     path, entity      = os.path.split( os.path.splitext(project)[0] )
@@ -114,7 +129,8 @@
             raise e
     
     # Do synthesis run
-    syn_result = os.system( '%s -batch %s' % (exe, project) )
+    syn_proc = subprocess.Popen( '%s -batch %s' % (exe, project), shell=True )
+    time.sleep( 1 )
     if not os.path.isfile( synth_input_log ):
         raise Panic( "synthesis log does not exist.  %s may not have run properly." %
                      (exe) )
@@ -164,15 +180,25 @@
 """ % (prog_name(), exe, project, os.path.abspath(synth_input_log)) )
             
         with open( synth_input_log ) as sil:
-            for line in sil:
+            for line in tail_f(sil, lambda: syn_proc.poll() is None):
                 # Want only useful messages (^@), and not @END lines
                 line = line.strip()
+
+                # Print the sub-programme header, so one can see progress
+                if line.startswith('Synpl'):
+                    line = line[:80]
+                    print '\n%s\n%s\n%s\n' % ('-'*len(line),
+                                              line,
+                                              '-'*len(line))
+
+                # Otherwise, process only message lines
                 if not line.startswith('@') or line in at_ignores:
                     continue
 
                 match = m_parse_log.search( line )
                 if not match:
-                    raise Panic( "unknown log entry:\n%s" % (line) )
+                    print "%s: warning: unknown log entry:\n%s" % (prog_name(), line)
+                    continue
 
                 # Parse log line, doing any type conversions
                 try:


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